Someone should post scans showing the brain damage in those who have smoked dope regularly. Looks a lot like the NFL players that have permanent brain damage from concussions.
You know there has been brain damage when you’re talking to a doper when they have the typical 3 second delay while they are trying to process what you said to them and how they should respond.
Like Obama's "intellectual stammer"?
Group comparison of the gray matter volume by SPM8 plus DARTEL analysis demonstrates significant reduction of gray matter volume in bilateral orbitofrontal gyri (AAL atlas) in marijuana users compared with controls. Right side of the image represents the right hemisphere in axial view.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4250161/
Other images at source
“What up, Dude?”